On Thu, 17 Nov 2005 15:45:25 -0500, " *JimH*" wrote:
"John H." wrote in message
.. .
On Thu, 17 Nov 2005 11:47:36 -0500, " *JimH*" wrote:
"NOYB" wrote in message
hlink.net...
"Wayne.B" wrote in message
...
On Thu, 17 Nov 2005 02:43:25 GMT, "NOYB" wrote:
I've been boating for over 20 years, buy have never owned a twin screw
boat
this size (31' LOA...10'7" beam). It should be a learning experience.
=============================================
There are a few new tricks but with a ouboards that can be steered,
you can handle it almost like a single. One of the issues with twin
OBs is that the props are not usually far enough apart to generate the
steering torque necessary to turn the boat in its own length, as most
twin inboards can by putting one engine in forward and the other in
reverse.
Thanks, Wayne. I heard that you can compensate a little bit by
increasing
the throttle with the reverse engine.
Once you learn to properly operate twins you will love them. What helped
me
with my first boat with twins (IO's) was to think of the throttles as a
handle bar on a bike. To turn the bow to port put the port in reverse and
starboard in forward. Your hand position would be the same as if you were
turning a bike to the left.
The boat looks like a beauty. Congratulations.
Did you mean a bike, or a tricycle? They aren't the same, if there is
anything
other than *very* slow speed on the bike.
--
Yes, I mean your relative hand position when turning the handle bars on a
bicycle. Turn left and your left hand is down (towards your body) and
right hand pushed up (away from your body). Turn the bow on your boat to
the left (port) with the engines your left hand goes down (putting the port
engine in reverse gear) and your right hand goes up (putting the starboard
engine in forward gear).
I always sterned into the dock. The port engine generally stayed in reverse
and I did all/most of the maneuvering with the starboard engine (going
between forward and reverse gears). I never touched the steering wheel.
It worked for me. ;-)
If you are going faster than a walking speed on a bicycle (or motorcycle),
pulling the left handlebar towards you will cause you to go right. Another way
of thinking of it is this, pushing the right handlebar away from you will cause
the bike to go right. Push right, go right. Push left, go left.
Maybe this will explain it better:
"If we intentionally move the contact patch line from vertically beneath the
Center of Gravity, the bike will start to lean. For example, if while riding the
bike straight ahead, we press on the left bar the front wheel points to the
right. The front wheel tracks to the right (sometimes called “out tracking”). So
the weight of bike and rider is now to the LEFT of it’s “support” on the ground,
the tire contact patches. Because the weight is to the left, the bike leans to
the left. It is important to note, for a LEFT turn, we initiate a lean to the
left by pressing on the left bar, turning the front wheel to the RIGHT. This is
often referred to as COUNTERSTEERING: a turn to the left initiated by turning
the front wheel to the right."
The above from:
http://www.rider-ed.com/tips/motorcyclestability.htm
In your initial post, if you change the word to tricycle, you'll be correct,
UNLESS you're talking about going in reverse, which most of us can't do on a
bike anyway!
--
John H.
"Divide each difficulty into as many parts as is feasible and necessary to resolve it."
Rene Descartes